The Secondary number comes from the Loop design Load。you can see the PS-C report.<br><div><br></div><div><br></div><div style="font-size: 12px;font-family: Arial Narrow;padding:2px 0 2px 0;">------------------ Original ------------------</div><div style="font-size: 12px;background:#efefef;padding:8px;"><div><b>From:</b> "Shaun Martin"<smartin@shaunmartinconsulting.com>; </div><div><b>Date:</b> 2012年12月1日(星期六) 上午8:31</div><div><b>To:</b> "equest-users"<equest-users@lists.onebuilding.org>; </div><div><b>Subject:</b> [Equest-users] capacity smaller than secondary demand</div></div><div><br></div><style><!--
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--></style><!--[if gte mso 9]><![endif]--><!--[if gte mso 9]><![endif]--><div class="WordSection1"><p class="MsoNormal">Hi everyone, <o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I’m working on a loop-to-loop heat pump model. My hot water loop has a coil load of 231.8 kBtu/h, from the SS-D and PS-D reports. To this loop, I have 710 kBtu/h of heat pumps and an 846 kBtu/h boiler attached, which reasonably matches the primary number. <o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">But, for some reason, the message below is telling me my secondary load is 10x the size that it actually is!<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">**WARNING**********************************************************************<o:p></o:p></p><p class="MsoNormal"> Loop: Hot Water Loop heating capacity is smaller<o:p></o:p></p><p class="MsoNormal"> than the secondary demand. Primary= -1537010.<o:p></o:p></p><p class="MsoNormal"> Secondary= -2291187.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Does anyone happen to know where this secondary number actually comes from?<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Thanks,<o:p></o:p></p><p class="MsoNormal">Shaun<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p></div>